Nonlinear optical response and exciton dephasing in quantum dots

Abstract

The full time-dependent four-wave mixing polarization in quantum dots is microscopically calculated, taking into account acoustic phonon-assisted transitions between different exciton states of the dot. It is shown that quite different dephasing times of higher exciton states in pancake anisotropic InGaAs quantum dots are responsible for the experimentally observed [1] double-exponential decay in the photon echo signal.

NOEKS-8 contribution; 4 pages, 3 figures

References in corpus (2)

• Dephasing in Quantum Dots: Quadratic Coupling to Acoustic Phonons
• Phonon-induced Exciton Dephasing in Quantum Dot Molecules

Cited by in corpus (5)

• Quantum theory of light emission from quantum dots coupled to structured photonic reservoirs and acoustic phonons
• Microcavity controlled coupling of excitonic qubits
• Dephasing of InAs quantum dot p-shell excitons using two-dimensional coherent spectroscopy
• Fundamentals of heterodyne wave mixing spectroscopy: a tutorial
• Impact of the phonon environment on the nonlinear quantum-dot-cavity QED. I. Path-integral approach